Chunk #13 — 2. Methods — 2.1. Setting, treatment programs, and procedures

Source: Ten-year stability of remission in private alcohol and drug outpatient treatment: non-problem users versus abstainers.
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Participants for the current study were individuals who were either abstainers or non-problem users (defined below) in the past 30 days (N = 684) when interviewed at 1 year (response rate of 85%).